Abstract
The design of a new type of coherent optical processor is presented. The image is scanned with a small collimated beam in order to reduce the diameter of the optics and to reduce artifacts caused by coherent light. If the shape of the beam is Gaussian, the scan line pattern will not appear on the recording film. Use of an optical circulator allows simultaneous propagation of the input and output beams of the processor in the same space. By using a mirror adjacent to the transparency, the film gamma can be set equal to 1 rather than 2.
© 1973 Optical Society of America
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